The following equation is incorrect. Which two signs should

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39

M: +1.00/-0.00

The following equation is incorrect. Which two signs should be interchanged to correct the equation?
24 + 4 - 20 ÷ 9 x 5 = 31

[SSC CHSL 25 March 2018 Morning Shift]

A - and +

B ÷ and +

C x and -

D x and ÷